My initial reactions in order:
-Oh it looks cute
-Okay drag and drop to play
-Is it me or does this look like a horror game level?
-OH MY GOD!
It is really fun to play and I found the sound design pleasant (with the exception of the sounds that are not supposed to be pleasant), I like quite a bit that it has an idle game/town building side to it. I think with a couple more facilities and different pachinko machine layouts it could be a really great game.
PS: The ground reminds me of the old sonic games and I love it.